qcacmn: Add an API wlan_reg_get_opclass_details

Add an API wlan_reg_get_opclass_details, to get the operating class
table details from the regulatory component. Also, add a new structure
regdmn_ap_cap_opclass_t in the regulatory component, to fill members
of the mapapcap_t structure.

Change-Id: I8b6a3867a766038663c10ce2f01a8b7d310c7375
CRs-Fixed: 2580505
7 files changed